24. In March 2019, Aldi Mfg made 700 unvarnished bookshelves at a cost of $12/unit. Aldi can sell the bookshelves unvarnished for $25/unit. Alternatively, Aldi can varnish the bookshelves and sell them for $65/unit but it would incur the following incremental costs: total direct materials: $7,000; total direct labor $14,000; and total fixed costs $10,500. Should Aldi sell the varnished or unvarnished bookshelves? a. Unvarnished because net income decreases by $3,500 b. Vamished because net income increases by $3,500 c. Unvarnished because net income increases by $3,500 d. Varnished because net income decreases by $3.500